The reason why I'm even considering a cover for the tablet is because of the glossy/slippery back. I want it made rough because if I keep it on my lap, it can easily slide off and fall. That happened once already. Plus, it also attracts a lot of finger prints. Plus, it would be easier to grip if the back was rough.
The old tablet, the Latitude 10 didn't have this problem. It had a very nice back which made it easier to grip. So I never thought of getting a cover for the back of it. However, because the screen was glossy, I bought an anti-glare screen film for the screen. I bought it from eBay. But I had to remove it after a couple of months because I had to send it back for repairs as the touch screen stopped working.
Anyways, the Dell is old news. Now I have a new tablet and it is awesome except for the aforementioned shinny back and a couple of small things.
Someone on Google Plus recommended me Skinomi for the back of the tablet. When I checked their website, I found that they already had skins for the T100. That is great. But the price is a bit on the high side. $29.95 on their website plus shipping which cannot be cheap. I found it $5 cheaper on eBay with a shipping cost of $10. $35 is kinda too high. Amazon (US) is selling it much cheaper though. Unfortunately, it is not available on Amazon Japan. Sadness.